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2808688080 = 2435111063897
BaseRepresentation
bin1010011101101001…
…0010110111010000
321020202001010201110
42213122102313100
521223011004310
61142411533320
7126413311662
oct24732226720
97222033643
102808688080
111211481a20
1266475a240
13359b7c913
141c9046532
151168a3d20
hexa7692dd0

2808688080 has 80 divisors (see below), whose sum is σ = 9498481344. Its totient is φ = 680893440.

The previous prime is 2808688063. The next prime is 2808688117. The reversal of 2808688080 is 808868082.

2808688080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 529309 + ... + 534588.

Almost surely, 22808688080 is an apocalyptic number.

2808688080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2808688080 is an abundant number, since it is smaller than the sum of its proper divisors (6689793264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2808688080 is a wasteful number, since it uses less digits than its factorization.

2808688080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063924 (or 1063918 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 48.

The square root of 2808688080 is about 52997.0572767960. The cubic root of 2808688080 is about 1410.9160387178.

The spelling of 2808688080 in words is "two billion, eight hundred eight million, six hundred eighty-eight thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 30 33 40 44 48 55 60 66 80 88 110 120 132 165 176 220 240 264 330 440 528 660 880 1320 2640 1063897 2127794 3191691 4255588 5319485 6383382 8511176 10638970 11702867 12766764 15958455 17022352 21277940 23405734 25533528 31916910 35108601 42555880 46811468 51067056 58514335 63833820 70217202 85111760 93622936 117028670 127667640 140434404 175543005 187245872 234057340 255335280 280868808 351086010 468114680 561737616 702172020 936229360 1404344040 2808688080